Air-cleaner.



W. H. L. DUNALDSON.

MH CLSANEH.

i APPLICATION FILED JULY H. 1918.

1,286,250. Patented Dec. 3, 19H5 I'as and tate 4 of I known tolme is ill (nt slib .mg plate 11f isformed upon or attached to WILLIAM n, LfnoNALDsoN, or sr. PAUL, MINNESOTA;

AIR-CLEANER.

Specification of Letters Pa tent.

Patented Dee. 3, .1918.

' Application led July 11, 191B.y Serial No. 244,474.

To a# rwhom it may concern.'

Be it known that I, WILLIAM H. L. DoN .-xnnsoN, n citizenof the United States, residin at St. Paul, in the county of. Ramsey Minnesota, have invented new useful Improvements in AirfCleaners, of which the following 'is a specification.

4My invention reltesto improveiints in nir cleaners for internal combustion engines. As is well known, large'quantities of (lust 1nders of gas engines'and this 1s particu arly the case where these engines are' used intrac- `tors, for agricultural work, or on thoroughfares carryinginnen traine. the dust is to rapidly decrease the .etliciencyV of thecu'rbureter and of the piston action, und ultii'nately to ruin the compression.

' The .o tof my invention is to simply,

efliciently and economically remove 'the solid matter from the zur usedin internal combuston engines.4 A z A further object is to provide an air cleanerwith numerous intake ports and corresponding distribung means souls to re M duce the velocity of the entering anI without impairing the suction through the ear-` bureter. A j A more detailed statement of its objects will appear in; the' following."specication und claims. y l 'The best 'embodiment 0f my invention now ustrated in the accompanyingdiawmgs, in which; f igure 1A 1s an elevationof my device with the easing partly brokenfaway; Fig. 2 is 'a Elan view with t looklng4v toward the top of the device; Eig. 4 is an enlarged ,detail'of a portion o f the annular distrlbuting plate carried by the cupf ilirnd .i4-lig.' 5 is a section on the line 5 5 of 1g. f My air cleaner comprises a capl A, a casin B, in the form of a truncated cone, surroun ing the separation chamber, and a dust co1- lector C adapted to be removably threaded into the base of thel casing. The. cap A is rovi'ded centrally ,at its tp with a pipe O communicating at 'one end with the interior of the-'cleaner andtat the other nwif). pen ant annular distribut the cap A and 1s so placed as to extend into the casing B and provide a-neripheral air openings 13 a series of e'cap partly broken away; 'the ltrend of said surface being ;1g. 3.1s a section on the line 3-3of Fig. 1

end HithmthejntakeQfaearbureter "duced l passage between said plate and the casing B.

his annular'plate 11-1`s.cr1mped to form a plurality of internal, curved, diagonal lchannels 12 and between these channels larcuate 6o are eut through `the plate withj the flaps 13 formed by the cutsl protruf'lingl outward.

The casing B is provided near its top with air influent openings 14 arranged 66 close together about its feriphery and the' portions 0f the casing W chare partially inwardly at t 4guides 15, whose outer s urfaces are curved 7o vertically, with their upper edges 16 forming substantially tangential lines with the internal peripheral surface of the casing. The 'casing B is unitedy Vto the cap A by means of a peripheral tlangel? formed on the upper edge of the casing and by opening the outer edge 18 of the cap about lSaid flange- 17. When so united it will be observed that the'openings 14 and air'guides 15 in the upper surface of the casing are B0 positioned around 'and spaced from the upper or: mperforate portion of the annular plate 11 on the 4cap. The lower end of the casing B 4is open and is provided with a ring 20 formed with internal threads 21. adapted 86 to receive corresponding` threads upon the upper end of the dust receptacle C.` Above the ring 20 a baille plate 22, which is s ubstantially squarev in olltline, is attached at its corners'to the casing B and is bent up- 90 ward at itsfcenter to form a sliding surface for any dust which mavaceumula'te thereon,`

toward the Openings 23.101'med between the balileand the' inner surface of the casing.

The dust receptacle Cispreferably formedv of glass so that t e amount of dust` accumulated therein at any particular time, may be obvious by inspection -and this 'dust receptacleV is furnished at its upper edge with 10Q threads '24 adapted to be screwed into thev threads 21- in the ,rino` 20 and. when so fastened, yto form an aiuti ht closure for the base ofthe casing B. en tbereceptacle A is filled with dust 't Vmay be unscrewed 105 and emptied.

InL oigeraion the intermittent suction pro- W y f cleaner through the numerousports .14, at

26 'V take ports.

,dust or other particles :container thence drawn through 1li4 form of the air guides 15, and an dust which ma get inside the plate 11 is urther directed ownward and controlled by the diagonal channels 12 on the inner surface of said plate. During' these movements -the of solid matter constantly move toward and are thrown against the inner surface of the casing B and finally fall throu h the o enings 23 into' the dust l while t ie clean air, being lighter than the solid matter thus removed, tends to'remain in the center oi the casing and Within the distributing' plate 11, and is the pipe 10 into the carbureter. I have found by exhaustive tests that 4with this device all of the solid mattersuspended in the air drawn through the orts 14 exce t a mere trace, is retained in t e cleaner an becauseof the area of t e numerous air influent ports inthe casing the air enters at comparatively low velocity and therefore with only the lighter particles of dust in suspension. is feature furuishes va distinct .advantage over air .cleaners having only one or a 'few restricted air i ndescribed my invention, what I Let? Havin lclaim asincw and desire to protect by tersrPatent is:

1. An air cleaner for gas engnescomprising a cap provided with a dependent, annu- 1 lar distributing lplate, crimped to ,form diagonal4 air channels, a conical casing periorated near its top to admit air therethrough,

iamber below said plate and a danst collector attached to casing. A

2.' An air cleaner for gas engines comprising a'cap provided wit p a dependent annu 40 lar distributing 4plate formed with internal,

diagonal, channels therein, a casing pro- Gopies otftlis patent may be obtained tardive vente each,

' provided with a through the upper periphery n with diagonalair c i air therethrough, the base 1of said,` V

tached to -the base 'oi said casing.

' Whereof, I have ,hereunto 'subscribed my vided with a series of air intake ports arranged close together and extending around the upper periphery of said casing, an air vlar distnb'uting lplate dlagonal, channels therein,

series` of togeth a conicaly casing air intake ports er and extending of said casing, an air guide ad acent to', and lextending tan entially within each of said lair ports sai casing forming an annular vcirculating channel around vsaid dust settling chamber below said plate, and a dust collector removably attached' to -the base of said'casin'g. f

arranged close formed with internal,-

distributing plate, aV

4. air 4cleaner for gas engines comprisa cap provided with a dependent annuing lar distributing plate formed with internal, diagonal, channels 'tcrein, acasing provided wit i a seriesl of ali-V `intake ports extending around the upper periphery of-said casin anda dust collectorrer'novably attache to th base of said casing.-

5; An air cleaner for gas engines `comprisingfacap p ovided with a perforated, de- `endent, annular, distributing plate. formed annels therein, a conical casing perforated near its` top to a mit a dust settlina chamber and; a dustV collect below `said -plate ror atname to this spegication,

WILLIAM'H. Li DONALD n.

Washington, '1). 0.

requiring correction follows: Page 2, line 46, clom 2, fo;` the word 'reachf read each.; und that. the said LettersfPatent. should be rond with -his corrootion therein thatthe same may conio;m to tho record of tho casein tho Ifatant Omoo. u

Signed and sealeo thisV 31st day of DecembarLLjD., 1518.' t

y F; W. 11. CLAY, Aaflg www qfPam.

[SEAL] Corectio'n In Lotters Patent No. 1,286,250.

MKMLJ,

4It'. is hereby certified that yin Lettera Patent.4 No. 1,286,250, grantod .Decemhoxf 3, 1918, upon th application of William H. L. Donaldson, of' St. Poul, Minnesota,

for an im rovcment in fAr-Clcaners, an error a ors 'u1 the tinted-s ecfioatio l P PP .P P 

